The Lost Moons of Venus

It is Britain's darkest hour - the desperate winter of 1940. A bewildered young man is pulled from a bombed house during the Blitz. But he is not like any of the other victims of the Luftwaffe's campagne of terror. Until his unexpected rescue, he was a child of the 21st century happily minding his own business watching TV.
Yet the opportune intelligence gained from his knowledge of the future course of the war should be a godsend to the Allies, but it proves a disastrous curse that changes everything.